82C89 데이터 시트보기 (PDF) - Intersil

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82C89

CMOS Bus Arbiter

Intersil 

82C89

X1

RDY2

X2

VCC

82C84A/85

CLOCK

GENERATOR

AEN2

READY RDY1

CLK AEN1

READY

CLK

80C86

CPU

S0

AD0-AD15 S1

A16-A19 S2

STATUS (S0, S1, S2)

PROCESSOR

LOCAL BUS

OE STB

ADDRESS

LATCH

82C82/

82C83H

(2 OR 3)

OE DT/R

TRANSCEIVER

82C86H/

82C87H

(2)

82C89

BUS

ARBITER

ANYRQST

CLK

IOB

S0-S2 RESB

AEN

XACK MULTI-MASTER

SYSTEM BUS

MULTI-MASTER

CONTROL BUS

VCC

AEN

82C88

BUS

CONTROLLER

CLK

ALE

DEN

IOB

DT/R

XCVR

DISABLE

MULTI-MASTER SYSTEM

COMMAND BUS

MULTI-MASTER SYSTEM

ADDRESS BUS

MULTI-MASTER SYSTEM

DATA BUS

FIGURE 4. TYPICAL MEDIUM COMPLEXITY CPU SYSTEM

4-348

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